CREATE: module model added

backend/models/module_model.py

+from datetime import datetime
+from config.database import db
+
+
+class Module(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(80), unique=True, nullable=False)
+    code = db.Column(db.String(120), unique=True, nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.now())
+    updated_at = db.Column(db.DateTime, onupdate=datetime.now(), default=datetime.now())
+
+    def __repr__(self) -> str:
+        return 'Module>>> {self.code}'